/*
 *  Copyright 2005 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.questionnaire.answerOption;

import com.blandware.atleap.common.QuestionnaireModuleConstants;
import com.blandware.atleap.model.questionnaire.AnswerOption;
import com.blandware.atleap.model.questionnaire.Question;
import com.blandware.atleap.model.questionnaire.Questionnaire;
import com.blandware.atleap.service.exception.BeanAlreadyExistsException;
import com.blandware.atleap.service.exception.BeanNotFoundException;
import com.blandware.atleap.service.questionnaire.QuestionnaireManager;
import com.blandware.atleap.webapp.action.core.BaseAction;
import com.blandware.atleap.webapp.form.questionnaire.AnswerOptionForm;
import com.blandware.atleap.webapp.util.core.WebappUtil;
import com.blandware.atleap.webapp.util.questionnaire.QuestionnaireModuleWebConstants;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * <p><a href="CreateAnswerOptionAction.java.html"><i>View source</i></a></p>
 *
 * @author Roman Puchkovskiy <a href="mailto:roman.puchkovskiy@blandware.com">
 *         &lt;roman.puchkovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.3 $ $Date: 2008/04/29 17:51:53 $
 * @struts.action name="answerOptionForm"
 * path="/questionnaire/answerOption/create"
 * scope="request"
 * input="inputForward"
 * validate="true"
 * roles="questionnaire-answerOption-create"
 * @struts.action-forward name="inputForward"
 * path=".questionnaire.answerOption.create"
 * @struts.action-forward name="viewAnswerOption"
 * path="/questionnaire/answerOption/view.do"
 * redirect="true"
 * @struts.action-forward name="listAnswerOptions"
 * path="/questionnaire/answerOption/list.do"
 * redirect="true"
 * @struts.action-forward name="listQuestions"
 * path="/questionnaire/question/list.do"
 * redirect="true"
 * @struts.action-forward name="unsatisfiable"
 * path="/questionnaire/answerOption/list.do"
 */
public final class CreateAnswerOptionAction extends BaseAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request,
                                 HttpServletResponse response)
            throws Exception {

		if ( !isCancelled(request) ) {
            HttpSession session = request.getSession();
            Long questionId = (Long) session.getAttribute(QuestionnaireModuleWebConstants.QUESTION_ID_KEY);
            if (questionId == null) {
                if (log.isWarnEnabled()) {
                    log.warn("Missing question ID. Returning to list...");
                }
                return mapping.findForward("listQuestions");
            }

			AnswerOptionForm answerOptionForm = (AnswerOptionForm) form;

			if ( !WebappUtil.hasCorrectValues(answerOptionForm.getTitleMap()) ) {
				// title must be specified
				ActionMessages errors = new ActionMessages();
				errors.add("title", new ActionMessage("core.commons.errors.required", getMessage(request, "questionnaire.answerOption.form.title")));
				saveErrors(request, errors, false);
				saveToken(request);
				return mapping.getInputForward();
			}

			AnswerOption answerOption = new AnswerOption();
			WebappUtil.copyProperties(answerOption, answerOptionForm, request);
            WebappUtil.fillFieldValueWithDefaultLocaleValue(answerOptionForm.getTitleMap(), answerOption.getTitle(), servlet.getServletContext());
            answerOption.setTitle(answerOptionForm.getTitleMap());

            QuestionnaireManager questionnaireManager = (QuestionnaireManager) getBean(QuestionnaireModuleConstants.QUESTIONNAIRE_MANAGER_BEAN);
            Question question = questionnaireManager.retrieveQuestion(questionId);

            if (question == null) {
				// no question found
				ActionMessages errors = new ActionMessages();
				errors.add("ownerNotFound", new ActionMessage("questionnaire.answerOption.errors.ownerNotFound"));
				saveErrors(request, errors);
				saveToken(request);
				return mapping.findForward("listQuestions");
            }

            Questionnaire questionnaire = question.getQuestionnaire();
            if (questionnaire.getFixed().booleanValue()) {
                // questionnaire is fixed, it cannot be edited
                ActionMessages errors = new ActionMessages();
                errors.add("questionnaireIsFixed", new ActionMessage("questionnaire.questionnaire.errors.fixed"));
                saveErrors(request, errors);
                return mapping.findForward("listAnswerOptions");
            }

			Long answerOptionId;
			try {
				answerOptionId = questionnaireManager.createAnswerOption(answerOption, questionId);
			} catch ( BeanAlreadyExistsException e ) {
				// answerOption already exists
				ActionMessages errors = new ActionMessages();
				errors.add("answerOptionAlreadyExists", new ActionMessage("questionnaire.answerOption.errors.alreadyExists"));
				saveErrors(request, errors);
				saveToken(request);
				return mapping.getInputForward();
			} catch (BeanNotFoundException e) {
				// no question found
				ActionMessages errors = new ActionMessages();
				errors.add("ownerNotFound", new ActionMessage("questionnaire.answerOption.errors.ownerNotFound"));
				saveErrors(request, errors);
				saveToken(request);
				return mapping.findForward("listQuestions");
            }
			request.getSession().setAttribute(QuestionnaireModuleWebConstants.ANSWER_OPTION_ID_KEY, answerOptionId);
			return mapping.findForward("listAnswerOptions");
		}

        return mapping.findForward("listAnswerOptions");
	}
}
